Improved apparatus for oxidizing metals



W. ATWOOD. APPARATUS PoR OXIDIZING METALS.

No. 46,618. Patented Mar. '7, 1865.

UNITED STATES PATENT OFFICE.

WM. ATWOOD, OE CAPE ELIZABETH, MAINE.

IMPROVED APPARATUS FoR'oyxlDl'zme METALS.

Specification forming part of Letters Patent No. 46,-6l S, dated March 7,1865. `v

' trodnced; and I do' hereby declare tha-tthe following is a full, clear, andA exact description of the construction and opera-tion of the same, reference being had to the annexed drawing, making a part of this specification.

The apparatus so invented consists of the revolving chamber A, made of cast-iron, fireclay, or other suitable/material. of any con.-

venient form, that delineated on the drawing' being preferred, open at theorice B, and communicating through vthe passage C with the chambersD and E by means of th duct F G G. Motion is communicated to the rcvolving chamberA by the pulleyK, the counand the gear-wheelV ter-shaft J, the pinion I, H, or by any suitable gearing. The revolving chamber A rests upon the bearings L L, is set in thebrick-work Q Q, and vis heated by means of the fire-box M and theheated air chamber N, communicating with -the chimney R by means of the fines? P.;

a a represent anges inthe interior ofthe revolving chamber The material to be oxidized is' introduced into the revolving chamberA through the orice B, andis there subjectedto the combined action of heat communicated from the heatedair chamber N and the oxygen of a current of atmospheridair admitted at the orifice-B, passing through the chamber A, and thence through the passage C into the duct F G, whence it passes through the chamber D into a chimneyor other proper Inode for obtaining adraft into the open air. the material to be oxidized as may-be carried by the draft into the passage F G are collected in the chambers D and E.

' The object of the anges c a is to'v keep Iresh surfaces of the material to be oxidized constantly exposed to the currentof air passing through the revolving chamber' A. These flanges may be one or more in number, or may be entirely omitted, according tothe material proposed to be oxidized.

The invention of ajrevolvi-ng chamber so constructed as to admit the passage of a constant current of atmospheric air over and through the material to b e oxidized while the same is kept in 'constant motion and exposed to any desirable degree of heat.

, WM. AT WOOD.

Witnesses:

M. M. BUTLER,

GEO. E. B. JACKSON.

Such particles of' 

